1995 Oldsmobile Achieva back firing

1995 OLDSMOBILE ACHIEVA
110,000 MILES
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GEORGE M BOYER
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  • 2 POSTS
achieva 2,4l engine idles fine back fires only after 3000 rpms more acceleration the faster it back fires replace ingnition module both coils fuel filter to no avail DISCONECTED CONVERTER O changed air filter HELP PLEASE
Aug 26, 2013 at 10:30 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
check fuel pressure with a gauge then check for worn cam lobes/followers/lifters........
Aug 27, 2013 at 12:25 PM
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GEORGE M BOYER
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  • 2 POSTS
Thanks hmac300 I will try the fuel presure test tried everthing else
Aug 28, 2013 at 7:10 PM
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